GB500237A - Improvements in or relating to slide rule calculators - Google Patents

Improvements in or relating to slide rule calculators

Info

Publication number
GB500237A
GB500237A GB2919337A GB2919337A GB500237A GB 500237 A GB500237 A GB 500237A GB 2919337 A GB2919337 A GB 2919337A GB 2919337 A GB2919337 A GB 2919337A GB 500237 A GB500237 A GB 500237A
Authority
GB
United Kingdom
Prior art keywords
scales
scale
slide rule
relating
usual
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2919337A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SIDNEY REGINALD LUCAS
Original Assignee
SIDNEY REGINALD LUCAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SIDNEY REGINALD LUCAS filed Critical SIDNEY REGINALD LUCAS
Priority to GB2919337A priority Critical patent/GB500237A/en
Publication of GB500237A publication Critical patent/GB500237A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
    • G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Calculators And Similar Devices (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

500,237. Calculating-apparratus. LUCAS, S. R. Oct. 26, 1937, No. 29193. [Class 106 (i)] A slide rule of the flat straight type with a cursor and the usual C, D scales is provided with a group of logarithmic scales on the slide and two groups of logarithmic scales on the stock, the scales being arranged and proportioned to deal directly with calculations involving English monetary units, Avoirdupois, and measures of length. The scales H and K are positioned to give results that are twenty times and twelve times the values on scale D. The scales U and V are in such position that results in scale D are divided by twelve and twenty respectively. Scales M and N are used in conjunction to obtain nett amounts in discount calculations. R is the usual scale of reciprocals.
GB2919337A 1937-10-26 1937-10-26 Improvements in or relating to slide rule calculators Expired GB500237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2919337A GB500237A (en) 1937-10-26 1937-10-26 Improvements in or relating to slide rule calculators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2919337A GB500237A (en) 1937-10-26 1937-10-26 Improvements in or relating to slide rule calculators

Publications (1)

Publication Number Publication Date
GB500237A true GB500237A (en) 1939-02-06

Family

ID=10287628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2919337A Expired GB500237A (en) 1937-10-26 1937-10-26 Improvements in or relating to slide rule calculators

Country Status (1)

Country Link
GB (1) GB500237A (en)

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